[−][src]Struct indexmap::map::OccupiedEntry
A view into an occupied entry in a IndexMap
.
It is part of the Entry
enum.
Methods
impl<'a, K, V> OccupiedEntry<'a, K, V>
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pub fn key(&self) -> &K
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pub fn get(&self) -> &V
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pub fn get_mut(&mut self) -> &mut V
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pub fn index(&self) -> usize
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Return the index of the key-value pair
pub fn into_mut(self) -> &'a mut V
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pub fn insert(&mut self, value: V) -> V
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Sets the value of the entry to value
, and returns the entry's old value.
pub fn remove(self) -> V
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Remove the key, value pair stored in the map for this entry, and return the value.
NOTE: This is equivalent to .swap_remove()
.
pub fn swap_remove(self) -> V
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Remove the key, value pair stored in the map for this entry, and return the value.
Like Vec::swap_remove
, the pair is removed by swapping it with the
last element of the map and popping it off. This perturbs
the postion of what used to be the last element!
Computes in O(1) time (average).
pub fn shift_remove(self) -> V
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Remove the key, value pair stored in the map for this entry, and return the value.
Like Vec::remove
, the pair is removed by shifting all of the
elements that follow it, preserving their relative order.
This perturbs the index of all of those elements!
Computes in O(n) time (average).
pub fn remove_entry(self) -> (K, V)
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Remove and return the key, value pair stored in the map for this entry
NOTE: This is equivalent to .swap_remove_entry()
.
pub fn swap_remove_entry(self) -> (K, V)
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Remove and return the key, value pair stored in the map for this entry
Like Vec::swap_remove
, the pair is removed by swapping it with the
last element of the map and popping it off. This perturbs
the postion of what used to be the last element!
Computes in O(1) time (average).
pub fn shift_remove_entry(self) -> (K, V)
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Remove and return the key, value pair stored in the map for this entry
Like Vec::remove
, the pair is removed by shifting all of the
elements that follow it, preserving their relative order.
This perturbs the index of all of those elements!
Computes in O(n) time (average).
Trait Implementations
impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for OccupiedEntry<'a, K, V>
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Auto Trait Implementations
impl<'a, K, V> Send for OccupiedEntry<'a, K, V> where
K: Send,
V: Send,
K: Send,
V: Send,
impl<'a, K, V> Unpin for OccupiedEntry<'a, K, V> where
K: Unpin,
K: Unpin,
impl<'a, K, V> Sync for OccupiedEntry<'a, K, V> where
K: Sync,
V: Sync,
K: Sync,
V: Sync,
impl<'a, K, V> !UnwindSafe for OccupiedEntry<'a, K, V>
impl<'a, K, V> RefUnwindSafe for OccupiedEntry<'a, K, V> where
K: RefUnwindSafe,
V: RefUnwindSafe,
K: RefUnwindSafe,
V: RefUnwindSafe,
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,